Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, D (Duvan)

Chess SA id

1150147675

FIDE id

Date of birth

2015-12-11 (U12)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-25

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1191.9

Item	Main	Standard	Rapid	Blitz
Rating	1221.4	1215.8	1200	1200
Raw rating	1221.4	1215.8	1200	1200
Weighted rating	1209.1	1205.9	1200	1200
Weighted performance	1137	1133.6	0	0
Floor	746.1	753.1	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	160.8	162.1	165.8	165.8
Highest rating	1382.2 2022-10-01	1382.1 2022-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1246.1 2024-04-01	1253.1 2024-04-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1246.1 2024-04-01	1253.1 2024-04-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1382.2 2022-10-01	1382.1 2022-10-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1221.4	1215.8	1200	1200
Analysis
Rating	1221.4	1215.8	1200	1200
Raw rating	1221.4	1215.8	1200	1200
Weighted rating	1209.1	1205.9	1200
Weighted performance	1137	1133.6	0
K-factor	36	36	36	36
Floor	746.1	753.1	700	700
Max/Min rating change allowed	160.8	162.1	165.8	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1221.4	1215.8	1200	1200
New weighted rating	1209.9	1206.3	1200	1200
New weighted performance	1130.2	1126.8	0	0
Temp new rating	1221.4	1215.8	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1221.4	1215.8	1200	1200
New K-factor	36	36	36	36
New floor	746.1	753.1	700	700

Item	Main	Standard
	0	0
	36	36
	25	25
	0	0
	5	5
	0	0
History	66	66

Games since
	Main 61	Standard 61		Rapid 0		Blitz 0
Gender	Male
Age group	U12
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3970		1306		465
Male	2993		985		351
U12	648		212		79
U12 Male	446		150		53
Standard
	RSA		Province		Region
Overall	3945		1414		545
Male	2972		1071		408
U12	630		237		94
U12 Male	435		167		63
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	36	11	30.56	-165.3	1355.8	1190.5
Standard	36	11	30.56	-165.3	1355.8	1190.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	66	25	37.88	-103	1295.2	1192.2
Standard	66	25	37.88	-103	1295.2	1192.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1221.4	1215.8	1200	1200
2025-09-30	1221.4	1215.8	1200	1200
2025-09-01	1221.4	1215.8	1200	1200
2025-08-01	1207.2	1205.1	1200	1200
2025-07-01	1207	1205.1	1200	1200
2025-06-01	1220.4	1220.9	1200	1200
2025-05-01	1208.9	1207.4	1200	1200
2025-04-01	1208.9	1207.4	1200	1200
2025-03-01	1207.8	1206.3	1200	1200
2025-02-01	1209	1207.7	1200	1200
2025-01-01	1179.1	1170.3	1200	1200
2024-12-01	1179.1	1170.3	1200	1200
2024-11-01	1188.4	1181.5	1200	1200
2024-10-01	1188.4	1181.5	1200	1200
2024-09-01	1188.4	1181.5	1200	1200
2024-08-01	1213.2	1211	1200	1200
2024-07-01	1213.2	1211	1200	1200
2024-09-01	1213.2	1211	1200	1200
2024-05-01	1213.2	1211	1200	1200
2024-04-01	1246.1	1253.1	1200	1200
2024-03-01	1232.7	1238	1200	1200
2024-02-01	1234.5	1241.6	1200	1200
2024-01-01	1234.5	1241.6	1200	1200
2023-12-01	1234.5	1241.6	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Midstream Open Chess Tournament (U12)	2025-08-25	2025-08-25	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
2	2025 Tshwane South School District CLOSED League Championship (U11A)	2025-08-15	2025-08-15	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
3	2025 Etienne Lewis Closed Chess Tournament (U12)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	3.5	Yes	Analysis
4	2025 Elise Steenkamp Open Chess Tournament (Bishop)	2025-06-14	2025-06-15	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
5	2025 Tshwane South School District Individual Finals (D4) (U11 Boys)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
6	2025 KSNG Open (U12)	2025-02-22	2025-02-22	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
7	2025 Tshwane Chess OPEN Registration Tournament (U12)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Midstream Open Chess Tournament (U12)	2025-08-25	2025-08-25	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
2	2025 Tshwane South School District CLOSED League Championship (U11A)	2025-08-15	2025-08-15	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
3	2025 Etienne Lewis Closed Chess Tournament (U12)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	3.5	Yes	Analysis
4	2025 Elise Steenkamp Open Chess Tournament (Bishop)	2025-06-14	2025-06-15	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
5	2025 Tshwane South School District Individual Finals (D4) (U11 Boys)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
6	2025 KSNG Open (U12)	2025-02-22	2025-02-22	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
7	2025 Tshwane Chess OPEN Registration Tournament (U12)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
8	Lardies Ope 2024 (U10)	2024-10-26	2024-10-26	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
9	D4 Tshwane South District Schools Teams Chess Tournament 2024 (U9A)	2024-08-03	2024-08-03	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
10	2024 Silver Lakes Open Chess Tournament (E)	2024-04-20	2024-04-20	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
11	2024 Chris Greyling Open Chess Tournament (E)	2024-03-16	2024-03-16	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
12	2024 Constantiapark Open (E)	2024-02-17	2024-02-17	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
13	Lardies Tournament 2022 (U8)	2022-10-29	2022-10-29	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	7	Tournament Lardies Tournament 2022				Tournament 2024 Constantiapark Open
		date 2022-10-29	rnd 1	type Standard	result 0.5	date 2024-02-17	rnd 2	type Standard	result 0.5
		Opponent Fourie, E (Ernest)				Opponent Swart, E (Eben)
2	3	Tournament 2025 Elise Steenkamp Open Chess Tournament				Tournament 2025 Etienne Lewis Closed Chess Tournament
		date 2025-06-15	rnd 5	type Standard	result 0.5	date 2025-08-09	rnd 2	type Standard	result 1
		Opponent Haupt, N (Nia)				Opponent Fourie, M (Marchant)
3	3	Tournament 2024 Constantiapark Open				Tournament 2024 Chris Greyling Open Chess Tournament
		date 2024-02-17	rnd 5	type Standard	result 1	date 2024-03-16	rnd 2	type Standard	result 1
		Opponent Kgwale, I (Itumeleng)				Opponent Motumi, T (Tsepe)

#	Games	Start				End
1	7	Tournament Lardies Tournament 2022				Tournament 2024 Constantiapark Open
		date 2022-10-29	rnd 1	type Standard	result 0.5	date 2024-02-17	rnd 2	type Standard	result 0.5
		Opponent Fourie, E (Ernest)				Opponent Swart, E (Eben)
2	3	Tournament 2025 Elise Steenkamp Open Chess Tournament				Tournament 2025 Etienne Lewis Closed Chess Tournament
		date 2025-06-15	rnd 5	type Standard	result 0.5	date 2025-08-09	rnd 2	type Standard	result 1
		Opponent Haupt, N (Nia)				Opponent Fourie, M (Marchant)
3	3	Tournament 2024 Constantiapark Open				Tournament 2024 Chris Greyling Open Chess Tournament
		date 2024-02-17	rnd 5	type Standard	result 1	date 2024-03-16	rnd 2	type Standard	result 1
		Opponent Kgwale, I (Itumeleng)				Opponent Motumi, T (Tsepe)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2024 Constantiapark Open				Tournament 2024 Chris Greyling Open Chess Tournament
		date 2024-02-17	rnd 5	type Standard	result 1	date 2024-03-16	rnd 2	type Standard	result 1
		Opponent Kgwale, I (Itumeleng)				Opponent Motumi, T (Tsepe)
2	2	Tournament 2025 Tshwane South School District Individual Finals (D4)				Tournament 2025 Tshwane South School District Individual Finals (D4)
		date 2025-05-10	rnd 2	type Standard	result 1	date 2025-05-10	rnd 3	type Standard	result 1
		Opponent Weyer, E (Evan)				Opponent Du Plessis-Pavlovic, L (Logan)
3	2	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament 2025 Tshwane Chess OPEN Registration Tournament
		date 2025-01-25	rnd 2	type Standard	result 1	date 2025-01-25	rnd 3	type Standard	result 1
		Opponent Vounatsos, L (Levi)				Opponent Barnes, D (Derek)

#	Games	Start				End
1	3	Tournament 2024 Constantiapark Open				Tournament 2024 Chris Greyling Open Chess Tournament
		date 2024-02-17	rnd 5	type Standard	result 1	date 2024-03-16	rnd 2	type Standard	result 1
		Opponent Kgwale, I (Itumeleng)				Opponent Motumi, T (Tsepe)
2	2	Tournament 2025 Tshwane South School District Individual Finals (D4)				Tournament 2025 Tshwane South School District Individual Finals (D4)
		date 2025-05-10	rnd 2	type Standard	result 1	date 2025-05-10	rnd 3	type Standard	result 1
		Opponent Weyer, E (Evan)				Opponent Du Plessis-Pavlovic, L (Logan)
3	2	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament 2025 Tshwane Chess OPEN Registration Tournament
		date 2025-01-25	rnd 2	type Standard	result 1	date 2025-01-25	rnd 3	type Standard	result 1
		Opponent Vounatsos, L (Levi)				Opponent Barnes, D (Derek)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Li ,J (Jiming)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Li ,J (Jiming)	3	1360.4	935.4	3	1358.9	935.4	0	0	0	0	0	0
2	Venter ,S (Stephan)	2	2	425	2	2	425	0	0	0	0	0	0
2	Venter ,S (Stephan)	2	1136.1	1561.1	2	1127.6	1561.1	0	0	0	0	0	0
3	Dixon ,G (Genevieve)	2	1	0	2	1	0	0	0	0	0	0	0
3	Dixon ,G (Genevieve)	2	1285.3	1285.3	2	1284.6	1285.3	0	0	0	0	0	0
4	Kleynhans ,M (Magnus)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Kleynhans ,M (Magnus)	2	1599.3	1174.3	2	1596.1	1174.3	0	0	0	0	0	0
5	Vosloo ,L (Leja)	2	1	0	2	1	0	0	0	0	0	0	0
5	Vosloo ,L (Leja)	2	1370.7	1370.7	2	1368.4	1370.7	0	0	0	0	0	0
6	Swart ,E (Eben)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Swart ,E (Eben)	1	1338	1338	1	1300.8	1338	0	0	0	0	0	0
7	Strecker ,C (Cael)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Strecker ,C (Cael)	1	1268.1	843.1	1	1257.4	843.1	0	0	0	0	0	0
8	De Klerk ,A (Amelia)	1	1	425	1	1	425	0	0	0	0	0	0
8	De Klerk ,A (Amelia)	1	1163	1588	1	1154	1588	0	0	0	0	0	0
9	Mkotong ,R (Reagile)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Mkotong ,R (Reagile)	1	1528.7	1103.7	1	1529.2	1103.7	0	0	0	0	0	0
10	Vounatsos ,L (Levi)	1	1	425	1	1	425	0	0	0	0	0	0
10	Vounatsos ,L (Levi)	1	1245	1670	1	1247.7	1670	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Van Der Merwe, D (Duvan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms